It wouldn't be #1 in any one of those categories. Total gun deaths actually would go well on the quiz, though, as the US is 2nd only to Brazil. (per capita they're much lower).
Xenophobia is a little harder to measure, but in a 2013 survey by World Values Survey (Sweden) polling different countries on their racist attitudes, the USA ranked damn near the bottom of the list (being most racially tolerant). Though many countries in Africa and some other around the world were not polled, the US would be somewhere around 170-190 on a list of xenophobic countries. India, in that poll, came out on top along with Jordan.
As for "faulty politicians," that's also difficult to measure, though on the Corruption Perceptions Index the United States is also very near the bottom of the list. Virtually every country in Asia, Africa, Latin America, and Eastern Europe rank worse. Though the US is the only country to have elected a narcissistic orangutan as president so there's that.

Lame. The U.S. is still among the least corrupt and xenophobic places on Earth. Its shortcomings are magnified because of its stature as the world's most influential country, and it could learn some lessons from western Europe, but compared to most of the nearly 200 countries, the US is a very tolerant and uncorrupt (is that word? I don't think so) place. It's also worth reminding that Trump won the election with fewer actual votes than his opponent, and his approval rating is currently below 40%. There are ignorant morons here, but they are the minority.